7MUCHINSKY P M, MONAHAN C J. What is Per- son-Environment Congruence? Supplementary Versus Complementary Models of Fit[J]. Journal of Voca- tional Behavior, 1987, 31(3): 268-277.
9BLAKE J. The Only Child in America: Prejudice Versus Performance [J]. Population and Develop- ment Review, 1981, 7(1): 43-54.
10FALBO T, POLIT D F. Quantitative Review of the Only Child Literature: Research Evidence and Theo- ry Development [J]. Psychological Bulletin, 1986, 100(2) : 176-189.